CN104150737A - Single-shaft self-cleaning/dispersion sludge drier and method thereof - Google Patents
Single-shaft self-cleaning/dispersion sludge drier and method thereof Download PDFInfo
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- CN104150737A CN104150737A CN201410370777.7A CN201410370777A CN104150737A CN 104150737 A CN104150737 A CN 104150737A CN 201410370777 A CN201410370777 A CN 201410370777A CN 104150737 A CN104150737 A CN 104150737A
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Abstract
The invention relates to a sludge drying plant and an application method thereof, particularly a single-shaft self-cleaning/dispersion sludge drier and an application method thereof, belonging to the field of solid waste treatment. The sludge drier comprises a roller, an adjustable-speed motor and a retaining ring base for supporting the roller. An eccentric shaft and a claw-type dispersion/self-cleaning unit are additionally arranged; the eccentric shaft is positioned in the roller along the falling path of the wet sludge, and the rotating action of the roller is combined; and when the wet sludge is rotated to a certain height, the wet sludge falls in the gravity direction due to the action of gravity, and therefore, the wet sludge starts to directly contact and adhere to the eccentric shaft and the devices on the shaft. By using the eccentric shaft and claw-type dispersion/self-cleaning unit, the sludge falling to the claw-type unit becomes larger, thereby effectively solving the problem of sludge caking; and the by using the self-cleaning function, the sludge attached to the eccentric shaft and claw-type unit departs from the unit, thereby enhancing the sludge drying efficiency.
Description
Technical field
The present invention relates to a kind of sludge drier and using method thereof, specifically relate to a kind of single shaft self-stip and break up sludge drier and using method thereof, it belongs to solid waste process field.
Background technology
Along with the continuous quickening of urbanization process and the development of modernization industry, the annual whole world can produce municipal sludge and the industrial sludge of enormous amount.For this reason, people start to seek the next effective lignin-sludge of certain suitable technology mode.Drying sludge technology is a kind ofly common can effectively reduce moisture percentage in sewage sludge so that it proceeds the technology of subsequent disposal, is specifically in drying plant mud is carried out to heat, evaporates the process of its internal junction Heshui.Because this technology can be according to the requirement of subsequent disposal operation, the water ratio by drying sludge to appointment, because being widely used in existing drying sludge processing.
Drying sludge uses special sludge drier conventionally, using steam, high-temperature flue gas or sun power as thermal source, adopts direct or indirect type of heating, is aided with and mixes and stir, thereby reach dry object.Wherein, in indirect heat transmission type sludge drier, mud does not directly contact with thermal source, but carry out heat transmission by heat conducting mode, the patent of invention " sludge anhydration burning is processed Integrated Processing System and technique thereof " that is CN201210115658.8 application as application number has just provided a kind of indirect heat transmission type drying sludge mode, because mud and thermal source are separated, its heating flue gas degree of cleaning are better, therefore use more.
Current indirect heat transfer drying machine adopts static state to bake and bank up with earth mode mostly, cause its inside to produce sludge settling and unilateral heating under action of gravity, heat inhomogeneous, thereby cause pending mud to be easy to caking, the patent of invention " Double-shaft spiked breaker " that is CN201110212057.4 as application number has just provided a kind of twin shaft dispersing device, double-axis reverse rotation, and differential is broken up, ensure the effect of breaing up of mud, realized again the function of cleaning.But structure is too complicated, uses inconvenience, and cost is high; In existing device, adopt cylindrical dispersing device is installed on axle, do not possess the function of cutting, break up poor effect; Wet mud viscosity is large, be easy to be bonded on barrel, the mud handle under metal bracelet is patted that utilizes fishing net formula metal bracelet to make to be bonded on barrel in existing apparatus is bonded at the mode that the mud on barrel is struck off, but by finding in actual mechanical process, metal bracelet is also easily bonded on cylinder wall by wet mud, cannot produce a desired effect.
In existing device, the high-temperature flue gas of heating mud directly discharges, and has caused the waste in resource; Can make mud dry in cylinder blast for the high-temperature flue gas too high oxygen level that heats wet mud; If pass into rare gas element, high cost in cylinder always.
The mud finished product being dried out is due to the deficiency of technical elements, as cylindrical shell length not, material lifting flights makes material copy poor effect, cylindrical shell rear portion make the drying sludge time fail to reach requirement etc. without stop gauge without relief on barrel, only can remove approximately 60% moisture, lead xerantic mud and still there is wet viscosity, can not reach and approach absolutely dry ideal effect.
How developing a kind of sludge drier rational in infrastructure, thereby certain play convenient and high efficiency drying sludge object, is the urgent technical barrier solving nearly ten years both at home and abroad.
Summary of the invention
For overcoming above-mentioned technical problem, the object of the invention is to provide a kind of single shaft self-stip to break up sludge drier, it utilizes claw type to break up self-stripping unit and solves the phenomenon that in actual production process, mud lumps; Utilize the airtight mud blow device of high-pressure blast to solve because the high viscosity of wet mud is bonded at the phenomenon on barrel; Utilize the phenomenon of the mud blast that sludge-drying explosion-proof equipment prevents from being dried, to realize continuity, the economy that can effectively realize wet mud.
For achieving the above object, the present invention adopts technical scheme to be: sludge drier is broken up in a kind of single shaft self-stip, comprises the back-up ring base of cylinder, buncher and back-up roller; Drum front end is connected with high-temperature flue gas stove, and drum front end is provided with opening for feed, and cylinder rear end is provided with smoke exhaust pipe, and described smoke exhaust pipe upper end is provided with smoke outlet, and lower end is provided with discharge port; Described inner wall of rotary drum is provided with material lifting flights, and inside is provided with excentric shaft; It also comprises: claw type is broken up self-stripping unit, the airtight mud blow device of high-pressure blast and sludge-drying explosion-proof equipment; Described claw type is broken up self-stripping unit mounting arrangements on excentric shaft, and the airtight mud blow device of described high-pressure blast is arranged at the cylinder outside of feed inlet end, and described sludge-drying explosion-proof equipment is connected with smoke exhaust pipe.
Described excentric shaft is positioned on the contour horizontal plane of centre of the drum and apart from cylinder axis 1/2 radius, its sense of rotation and drum rotating opposite direction.
It is one group that described claw type is broken up three of self-stripping units, and every group of equidistant placement is on excentric shaft, and its distance is 70cm; The circumferential spacing that every group of three claw type are broken up self-stripping unit equates, its angle is 120 °.
Described claw type is broken up self-stripping unit and is comprised: beat pawl and connecting joint; Beat pawl and connecting joint for being slidably connected, the described pawl of beating is by 3 triangular prism shape bar constructions; Connecting joint is fixed on excentric shaft, beats pawl and opens, when pawl closure is beaten in the below that connecting joint turns to vertical direction with excentric shaft when the top that connecting joint turns to vertical direction with excentric shaft.
The described angular range of opening of beating pawl is 15 °-45 °.
The airtight mud blow device of described high-pressure blast comprises: outer tube, high pressure positive blower and control valve; Described outer tube is sleeved on the cylindrical shell of cylinder feed inlet end, the inwall that the roller tube of suit outer tube is outer tube, and inwall and outer tube form the cylindrical structure with cavity, and described outer tube is airtight, and inwall is provided with inner wall hole; Described outer tube is motionless with respect to cylinder near a side of feed end, adopts two soft formula tightness systems to be connected with cylinder opening for feed end face, and described tightness system is provided with air inlet port, and air inlet port is connected with valve with high pressure positive blower successively by pipeline.
Described tightness system adopts aluminium carbonate composition board.
The cylindrical shell length of the airtight mud blow device of described high-pressure blast is drum length 1/3.
Described sludge-drying explosion-proof equipment comprises: under meter, prolong, soda-lime and blower fan; Under meter, prolong and soda-lime pipeline are connected successively, and described under meter is connected in smoke exhaust pipe by pipeline; Described soda-lime is connected with high-temperature flue gas stove by pipeline; Pipeline between described soda-lime and high-temperature flue gas stove is provided with blower fan, and described under meter control is back to the amount of the flue gas of high-temperature flue gas stove.
Described roller tube is slant setting, and its angle of inclination is 3 °-5 °, adopts the sine value of axis to be expressed as 0.05-0.09; Described roller tube length is 1.25-1.5 times of existing dryer drum cylindrical shell length.
Described material lifting flights surface is wave structure.
Described excentric shaft end and cylinder discharge zone in cylinder is respectively equipped with blocking material plate; Described blocking material plate height is 10cm.
The process of the smoke backflow of sludge drier is broken up in described single shaft self-stip: a part of high-temperature flue gas is discharged from the smoke outlet of cylinder afterbody top, another high-temperature flue gas is back to high-temperature flue gas stove by under meter and soda-lime under the effect of the second blower fan, the quantity of reflux of under meter control flue gas, in the time that inner wall hole stops up, the flue gas refluxing enters in the cavity between inwall and outer tube by air inlet port under the effect of high pressure positive blower, mud to inner wall hole purges, flue gas has been realized the recycling that refluxes, it carries out processed to original high-temperature flue gas, realize Circulation, effectively control owing to constantly causing in cylinder oxygen content compared with the high phenomenon that makes sludge-drying blast to being filled with fresh heated air in cylinder.
A using method for sludge drier is broken up in single shaft self-stip, and its process is: high-temperature flue gas enters the inside of roller dryer under the effect of the first blower fan by high-temperature flue gas stove, treating material enters cylinder from material inlet, cylinder rotates under the driving of drive unit, its inner material lifting flights rotates with cylinder, thereby mud is taken up repeatedly carry out big area dry, the excentric shaft rotarily driving in cylinder of cylinder rotates, thereby driving the claw type being arranged on excentric shaft to break up self-stripping unit rotates, beating pawl when the top that excentric shaft turns to vertical direction opens, and by material scattering, beating pawl closure when the below that connecting joint turns to vertical direction with excentric shaft is cleaned the mud that sticks to excentric shaft and beat on pawl, simultaneously material enter by high-temperature flue gas stove under the high-temperature flue gas effect in cylinder dry, the blocking material plate that cylinder inside is crisscross arranged makes mud move along snakelike route, carries out redrying, break up and dry material is discharged by discharge gate, a flue gas part is discharged by smoke outlet, and another part, under the effect of the second blower fan, is got back to high-temperature flue gas stove by under meter, prolong and soda-lime, backflow flue gas enters cylinder inside treating material is dried after the heating of high-temperature flue gas stove, mud rotates because viscosity is easily stopped up inner wall hole compared with ambassador's mud in cylinder, when inner wall hole stops up when serious, Open valve, open high pressure positive blower, the flue gas of process soda-lime is under the effect of high pressure positive blower, enter in the cavity between inwall and outer tube by air inlet port, inner wall hole is purged, when the material in inner wall hole is purged when clean, stop high pressure positive blower, valve-off.
Major advantage of the present invention is as follows:
1) set up excentric shaft and claw type is broken up self-stripping unit, because excentric shaft is positioned on the path of whereabouts that cylinder and excentric shaft be positioned at wet mud, in conjunction with the turning effort of cylinder self, in the time that wet mud is transferred to certain altitude, due to action of gravity, wet mud falls along gravity direction, and therefore wet mud inevitably starts directly contact and adhere to the device on excentric shaft and axle thereof.The excentric shaft increasing and claw type are broken up mud that self-stripping unit makes to fall claw type device from large to small, can effectively solve mud and become piece problem, and the function of self-stip makes to be attached to the mud separation device of excentric shaft and claw type device, thus the drying efficiency of raising mud;
2) the airtight mud blow device of high-pressure blast increasing, on it, arrange several ventilating pits, the existence of ventilating pit, make to be bonded at mud on cylinder wall under the effect of the high-pressure blast impact air-flow by ventilating pit self, the mud that makes to be bonded on barrel is purged and is departed from barrel rapidly, making mud on barrel is only very thin one deck, is the follow-up dry favourable condition that provides.
3) increase high temperature gases recirculating treatment unit, adopt the method for smoke backflow recycling, reduce oxygen content in cylinder, prevent sludge-drying blast.High temperature gases recirculating after treatment again utilizes in roller dryer, has both realized energy-saving and emission-reduction, has reduced again cost.
4) increase of cylindrical shell length, lengthens material stroke, and has increased the time of hot blast contact, has strengthened the process of heat and mass, has improved the efficiency of heat exchange, carries out redrying to not meeting the requirements of sludge-drying.
5) material lifting flights has adopted the design of awave relief, not only can make mud obtain good operation in inner barrel, also strengthen the dynamics of material copy, mud is taken up, is thrown down continuously, repeatedly impact process in make the heating surface of mud greatly increase and strengthen the concussion effect to mud.
6) increase of blocking material plate, mud is moved along snakelike route between interlaced blocking material plate, extend mud in the residence time of high-temperature zone and make warm air form tortuous stream, make not meet the requirements of mud and fully absorb heat, reach approximate absolutely dry effect, heat exchange efficiency increases greatly, use material idealized.
Brief description of the drawings
Fig. 1 is the structural representation that single shaft sludge drier is broken up in self-stip;
Fig. 2 is the A-A face of Fig. 1;
Fig. 3 is the front view that claw type is broken up self-stripping unit;
Fig. 4 is the left view that claw type is broken up self-stripping unit;
Fig. 5 is the vertical view that claw type is broken up self-stripping unit;
Fig. 6 is material lifting flights setting drawing;
Fig. 7 is blocking material plate layout drawing;
In figure: 1, the first blower fan, 2, opening for feed, 3, outer tube, 4, cylinder, 5, gear ring, 6, rolling ring, 7, gear wheel pedestal, 8, gear wheel, 9, buncher, 10, rolling ring base, 11, high-temperature flue gas stove, 12, under meter, 13, prolong, 14, soda-lime, 15, high pressure positive blower, 16, valve, 17, the second blower fan, 18, excentric shaft, 19, material outlet, 20, claw type breaks up self-stripping unit, 21, air inlet port, 22, inner wall hole, 23, smoke outlet, 24, material lifting flights, 25, blocking material plate.
Embodiment
Break up sludge drier and using method thereof in order further to understand this single shaft self-stip, as follows below in conjunction with brief description of the drawings.
It comprises: high pressure combustion gas furnace 11, and described high pressure combustion gas furnace 11 is connected with cylinder 4 with the first blower fan 1 respectively; Described cylinder 4 adopts slant setting, and its pitch angle is 3 °-5 °, adopts the sine value of axis to be expressed as 0.05-0.09.Cylinder 4 front ends are provided with opening for feed 2, and its rear end is provided with smoke exhaust pipe, and cylinder 4 inwalls are provided with material lifting flights 24, and material lifting flights 24 adopts wave-like, and described smoke exhaust pipe is connected with under meter 12, prolong 13, soda-lime 14 and high pressure combustion gas furnace 11 successively by pipeline; Between high-temperature flue gas stove 11 and soda-lime 14, be provided with the second blower fan 17; Cylinder 4 cylindrical shells of described cylinder 4 feed inlet ends are set with outer tube 3 outward, and the roller tube of suit outer tube 3 is the inwall of outer tube 3, and inwall and outer tube 3 form the cylindrical structure with cavity, and described outer tube 3 is airtight, and inwall is provided with inner wall hole; Described outer tube 3 adopts two soft formula tightness systems to be connected with cylinder 4 opening for feed end faces, and described tightness system is provided with air inlet port 21, and air inlet port 21 is connected with valve 16 with high pressure positive blower 15 successively by pipeline; In described cylinder 4, be provided with excentric shaft 18, be positioned on the horizontal plane contour with centre of the drum and apart from cylinder axis 1/2 radius, its sense of rotation is contrary with cylinder 4 sense of rotation.Excentric shaft 18 is provided with claw type and breaks up self-stripping unit 20, and it is one group that described claw type is broken up 20 3 of self-stripping units, and every group of equidistant placement is on excentric shaft, and its distance is 70cm; The circumferential spacing that every group of three claw type are broken up self-stripping unit equates, its angle is 120 °; Described claw type is broken up self-stripping unit 20 and is comprised dozen pawl and connecting joint; Beat pawl and connecting joint for being slidably connected, the described pawl of beating is by 3 triangular prism shape bar constructions; Connecting joint is fixed on excentric shaft 18, beats pawl and opens, when pawl closure is beaten in the top that connecting joint turns to vertical direction with excentric shaft 18 when the top that connecting joint turns to vertical direction with excentric shaft 18; The described angular range of opening of beating pawl is at 15 °-45 °.Described excentric shaft 18 ends and cylinder 4 discharge zones are respectively equipped with blocking material plate 25; Described blocking material plate 25 is highly 10cm.
Cylinder 4 inside are provided with excentric shaft 18, be positioned at the contour horizontal plane in cylinder 4 centers on and apart from cylinder axis 1/2 radius, its sense of rotation is contrary with cylinder 4 sense of rotation.Mud in cylinder 4 can be broken up self-stripping unit 20 with claw type relative movement occurs under the drive of material lifting flights, and mud has strengthened mud and drops on the surging force on dispersing device because having kinetic energy.
Described claw type is broken up self-stripping unit 20 and is turned to when top, and because tension force effect claw type is opened, dispersing device is designed to the shape of similar triangular prism, and the seamed edge of triangular prism can play cutting to caking mud.When claw type is broken up self-stripping unit 20, to turn to when below closed due to action of gravity again, because closure collision produces extruding, the mud being attached between claw type device is extruded, break up self-stripping unit 20 thereby depart from excentric shaft 18 with claw type, realize self-cleaning function.
For the high-temperature flue gas that heats wet mud, one smoke outlet 23 is set at material outlet place, a high-temperature flue gas part is discharged from smoke outlet 23, and another part carries out partial reflux recycling by sludge-drying explosion-proof equipment, has controlled an interior oxygen content.The high temperature gases recirculating treatment unit increasing again utilizes high temperature gases recirculating after treatment in roller dryer, has both realized energy-saving and emission-reduction, has reduced again cost.
Claims (10)
1. a sludge drier is broken up in single shaft self-stip, comprises the rolling ring base of cylinder, drum drive and back-up roller; Described cylinder is connected with high-temperature flue gas stove, and cylinder is provided with opening for feed with one end that high-temperature flue gas stove is connected, and cylinder rear end is provided with smoke exhaust pipe, and described smoke exhaust pipe upper end is provided with smoke outlet, and lower end is provided with discharge port; Described inner wall of rotary drum is provided with material lifting flights, and described material lifting flights surface is wave structure; Described cylinder inside is provided with excentric shaft, and described excentric shaft end and cylinder discharge zone are respectively equipped with blocking material plate; Described blocking material plate height is 10cm; It is characterized in that: it also comprises: claw type is broken up self-stripping unit, the airtight mud blow device of high-pressure blast and sludge-drying explosion-proof equipment; Described claw type is broken up self-stripping unit mounting arrangements on excentric shaft, and the airtight mud blow device of described high-pressure blast is arranged at the cylinder outside of feed inlet end, and described sludge-drying explosion-proof equipment is connected with smoke exhaust pipe.
2. sludge drier is broken up in a kind of single shaft self-stip according to claim 1, it is characterized in that: described excentric shaft is positioned on the contour horizontal plane of centre of the drum and apart from cylinder axis 1/2 radius, its sense of rotation and drum rotating opposite direction.
3. sludge drier is broken up in a kind of single shaft self-stip according to claim 1, it is characterized in that: it is one group that described claw type is broken up three of self-stripping units, and every group of equidistant placement is on excentric shaft, and its distance is 70cm; The circumferential spacing that every group of three claw type are broken up self-stripping unit equates, its angle is 120 °.
4. break up sludge drier according to a kind of single shaft self-stip described in claim 1 or 3, it is characterized in that: described claw type is broken up self-stripping unit and comprised dozen pawl and connecting joint; Beat pawl and connecting joint for being slidably connected, the described pawl of beating is by 3 triangular prism shape bar constructions; Connecting joint is fixed on excentric shaft, beats pawl and opens, when pawl closure is beaten in the below that connecting joint turns to vertical direction with excentric shaft when the top that connecting joint turns to vertical direction with excentric shaft.
5. sludge drier is broken up in a kind of single shaft self-stip according to claim 4, it is characterized in that: describedly beat angular range that pawl opens at 15 °-45 °.
6. sludge drier is broken up in a kind of single shaft self-stip according to claim 1, it is characterized in that: the airtight mud blow device of described high-pressure blast comprises: outer tube, high pressure positive blower and control valve; Described outer tube is sleeved on the cylindrical shell of cylinder feed inlet end, the inwall that the roller tube of suit outer tube is outer tube, and inwall and outer tube form the cylindrical structure with cavity, and described outer tube is airtight, and inwall is provided with inner wall hole; Described outer tube is motionless with respect to cylinder near a side of feed end, adopts two soft formula tightness systems to be connected with cylinder opening for feed end face, and described tightness system is provided with air inlet port, and air inlet port is connected with valve with high pressure positive blower successively by pipeline; Described tightness system adopts aluminium carbonate composition board.
7. sludge drier is broken up in a kind of single shaft self-stip according to claim 6, it is characterized in that: the cylindrical shell length of the airtight mud blow device of described high-pressure blast is drum length 1/3.
8. sludge drier is broken up in a kind of single shaft self-stip according to claim 1, it is characterized in that: described sludge-drying explosion-proof equipment comprises: under meter, prolong, soda-lime and blower fan; Under meter, prolong and soda-lime pipeline are connected successively, and described under meter is connected in smoke exhaust pipe by pipeline; Described soda-lime is connected with high-temperature flue gas stove by pipeline; Pipeline between described soda-lime and high-temperature flue gas stove is provided with blower fan, and described under meter control is back to the amount of the flue gas of high-temperature flue gas stove.
9. sludge drier is broken up in a kind of single shaft self-stip according to claim 1, it is characterized in that: described roller tube is slant setting, and its angle of inclination is 3 °-5 °, adopts the sine value of axis to be expressed as 0.05-0.09; Described roller tube length is 1.25-1.5 times of existing dryer drum cylindrical shell length.
10. a using method for sludge drier is broken up in single shaft self-stip, and its process is: high-temperature flue gas enters the inside of roller dryer under the effect of the first blower fan by high-temperature flue gas stove, treating material enters cylinder from material inlet, cylinder rotates under the driving of drive unit, its inner material lifting flights rotates with cylinder, thereby mud is taken up repeatedly carry out big area dry, the excentric shaft rotarily driving in cylinder of cylinder rotates, thereby driving the claw type being arranged on excentric shaft to break up self-stripping unit rotates, beating pawl when the top that excentric shaft turns to vertical direction opens, and by material scattering, beating pawl closure when the below that connecting joint turns to vertical direction with excentric shaft is cleaned the mud that sticks to excentric shaft and beat on pawl, simultaneously material enter by high-temperature flue gas stove under the high-temperature flue gas effect in cylinder dry, the blocking material plate that cylinder inside is crisscross arranged makes mud move along snakelike route, carries out redrying, break up and dry material is discharged by discharge gate, a flue gas part is discharged by smoke outlet, and another part, under the effect of the second blower fan, is got back to high-temperature flue gas stove by under meter, prolong and soda-lime, backflow flue gas enters cylinder inside treating material is dried after the heating of high-temperature flue gas stove, mud rotates because viscosity is easily stopped up inner wall hole compared with ambassador's mud in cylinder, when inner wall hole stops up when serious, Open valve, open high pressure positive blower, the flue gas of process soda-lime is under the effect of high pressure positive blower, enter in the cavity between inwall and outer tube by air inlet port, inner wall hole is purged, when the material in inner wall hole is purged when clean, stop high pressure positive blower, valve-off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410370777.7A CN104150737B (en) | 2014-07-30 | 2014-07-30 | Sludge drier and method thereof are broken up in a kind of single shaft self-stip |
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| CN201410370777.7A CN104150737B (en) | 2014-07-30 | 2014-07-30 | Sludge drier and method thereof are broken up in a kind of single shaft self-stip |
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| CN104150737B CN104150737B (en) | 2015-11-18 |
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| CN104150737B (en) | 2015-11-18 |
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